Derrick-car.



PATENTBD APR. 12, 1904.

M. SGHMALTZ. DERRICK CAR.

-nPLIoATIoN FILED DBO. 21, 190s.

` 2 SHEETS-snm' 1.

NO MODEL.

Wit? esse/5".

` PATENTBD APR. 12, 41,904.

M. SCHMALTZ. DERRIGK GAR.

PPLIUATION FILED Dnc. 21. 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

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Wi i? e as es ms Pncls co. P Y um UNITED STATES Patented April 12, 1904.

PATENT OFFICE.

DERRlCK-CAR.

SPECIFICATION forming part of Letters Patent NO. 757,235, dated April12, 1904.

Application filed December 21, 1903. Serial No. 1855936. (No model.)

To all whom it may concern,.-

Be it known that I, MICHAEL SGHMALTZ, a citizen ofthe United States,residing at Duluth, in the county of St. Louis and State of Minnesota,have invented certain new and useful Improvements in Derrick-Cars; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to derrick-cars, and has for its object theconstruction of a car provided with trucks adapted to rest upon therails of a railway-track between the forward and rearward trucks ofanother or enginebearing car standing on the same track, whichderrick-car is further provided with bridgerails extending from saidtrack-rails over its front truck and from said front truck to and overits rear truck and to said track-rails in rear of said rear truck,whereby said enginebearing car may pass from said track-rails over thetrucks of said derrick-car and return to said track-rails.

With this and other objects in view it consists of transverse sillsnormally supported above said track on vertically-yielding wheels,bridge-rails extending from the forward to the rearward sills, inclinedrails extending outwardly from the tops of said sills to saidtrackrails, and aderrick-supporting frame erected on said sills.

It also consists of certain other constructions, combinations, andarrangements of parts, as will be hereinafter described and claimed.

In the drawings, Figure 1 is a side elevation of a car embodying saidinvention. Fig. 2 is a horizontal section of the same on the line y ofFig. 1, and Fig. 3 is a front elevation of one side of said carembodying said invention.

In the drawings, 1 and 2 are the track-rails of a railway-track uponwhich are adapted to roll wheels 3, mounted upon transversely-directedshafts 3a, journaled in vertically-yielding journal-boxes, as 8b, whichboxes are positioned in and near the opposite ends oftransversely-directed sills 4 and 5, which are normally supportedthereon above said track. Each of said sills is preferably provided uponits outer face with inclined portions 6, ex-

tending outwardly and downwardly toward said track-rails, upon whichinclined portions are secured or formed approach rails or ribs 7.

Upon said sills I erect a derrick-frame 8, preferably includingsupporting legs or brackets 9.

The construction thus far described is shown and described, togetherwith additional constructions, in my application for United Statespatents for log loading and skidding machines, which application wasfiled in the United States Patent Oflice on or about the 23d day ofOctober, 1903, Serial No. 17 8,184. In said application, however, I showan enginecar adapted to stand on said track-rails between the sills ofthe derrick-car. Inclined portions extending from the inner faces of thesills of said derrick-car toward the trackrails for the purpose ofenabling said enginecar or other cars to travel from said trackrailsover said sills are also shown in said application; but it is regardedas more or less undesirable to have inclined approaches on each side ofeach of said sills, for-the reason that a car passing over both of saidsills must be raised twice at each end, or if said passing car be ofgreat length it must be raised once at each end and again simultaneouslyat both ends. In my present invention I omit the inclined portions shownin said application extending from the opposingl faces of said sills tosaid track-rails and in lieu thereof form upon said opposing facesabutments 10, to which I secure in any suitable manner the oppositeendsof bridge-rails 11, extending from one to the other of said sills inoperative continuation of the upper ends of said rails. If desired, oneor more transversely-directed rails or sills 12 may be secured to thelower faces of said bridge-rails intermediate of said sills 1 and 2 andextending downward to the plane of the lower faces of said sills 1 and2. It will now be seen that a car crossing over said sills need only'beraised once at each end and that the consequent wear and tear on each ofthe cars and on the means for moving said passing car is diminished. Mypresent invenembodied is adapted to stand between the forward andrearward trucks of the engine-bearing car shown in said applicationSerial No. 17 8,184, certain portions of the constructions shown in saidapplication being rst suitably lengthened, shortened, or transposed tosuit the requirements for inserting the trucks or sills of thederrick-car between the forward and rearward trucks of the engine-carand in such manner as will readily suggest itself to any one skilled inthe art and without departing from the spirit and scope of my inventionas therein claimed.

Having now described my invention, what I claim, and desire to secure byLetters Patent, 1s-

In a car, the combination of transverse sills adapted to extend over theparallel rails of a railway track, vertically yielding journalboxesmounted in said sills, supporting- Wheels normally adapted to roll uponsaid track and mounted on shafts journaled in said boxes and adapted torecede within said sills sufficiently to lower said sills to the trackwhen abnormal Weight is borne by said sills, inclined approachesextending from the forward face of the forward one of said sills towardthe track-rails, inclined approaches extending from the rearward face ofthe rearward one of said sills toward the track-rails, and bridge-railsmounted upon and extending over the forward said approaches and sill andto and over the rearward said approaches and sill, substantially asdescribed.

In testimony whereof I hereunto aiiix my signature in presence of twowitnesses.

MICHAELl SCHMALTZ. Witnesses:

JAMES T. WATSON, WELLINGTON M. BLEWETT.

